Testing Standards

Metal Materials

GB/T 228.1: Metallic materials — Tensile testing — Part 1: Method of test at room temperature

GB/T 232: Metallic materials — Bend test

GB/T 229: Metallic materials — Charpy pendulum impact test method (ambient and low temperature)

GB/T 21839: Test methods of steel for prestressing concrete

GB/T 244: Test method for bending of metal pipes

GB/T 246: Test method for flattening of metal pipes

Reinforcing Steel Bars (Rebar)

GB 1499.2: Hot rolled ribbed steel bars (tensile properties, bending properties, weight deviation, surface dimensions, chemical composition, etc.)

GB 1499.1: Hot rolled plain steel bars (tensile properties, bending properties, weight deviation, surface dimensions, chemical composition, etc.)

GB/T 701: Hot rolled round steel wire rod (tensile properties, bending properties, weight deviation, surface dimensions, chemical composition, etc.)

GB 13788: Cold rolled ribbed steel bars (tensile properties, bending properties, weight deviation, surface dimensions, chemical composition, etc.)

GB 13014: Remained heat treated steel bars (tensile properties, bending properties, chemical composition, etc.)

GB/T 20065: Screwed steel bars for prestressing concrete (yield strength, tensile strength, percentage elongation after fracture, total percentage elongation at maximum force)

Rebar Connections and Fabricated Products

JGJ 107: Mechanical splicing of steel reinforcing bars (on-site inspection of splices, process testing, type testing; tensile strength, residual deformation, total percentage elongation at maximum force)

JGJ 18: Welding of reinforcing steel bars (tensile test, bend test; on-site inspection of splices, process testing)

GB/T 1499.3: Welded steel fabric (tensile test, bend test, shear resistance test)

Steel Plates and Sections

GB/T 700: Carbon structural steels (tensile test, bend test, impact test, chemical composition)

GB/T 1591: High strength low alloy structural steels (tensile test, bend test, impact test, chemical composition)

GB/T 71, GB/T 711: Quality carbon structural steels (tensile test, bend test)

GB/T 5213: Cold rolled low carbon steel sheet and strip (tensile test)

GB/T 2518: Continuous hot-dip zinc-coated steel sheet and strip (tensile test, thickness of zinc coating, mass of zinc coating)

Prestressing Steel

GB/T 5224: Steel strand for prestressing concrete (straightness, tensile test: maximum force, 0.2% yield force, total percentage elongation at maximum force, elastic modulus, stress relaxation test)

GB/T 5223: Steel wire for prestressing concrete (straightness, tensile test: maximum force, 0.2% yield force, total percentage elongation at maximum force, percentage reduction of area, bend test, elastic modulus, stress relaxation test)

GB/T 14370: Anchors, grips and couplers (hardness, static load anchorage performance)

Steel Pipes

GB/T 3091, GB/T 13793: Welded steel pipes (tensile test, bend test, flattening test, hydraulic pressure test, zinc coating)

GB/T 8162, GB/T 8163: Seamless steel pipes (tensile test, bend test, flattening test, impact test)

Stainless Steel Products

GB/T 1220: Stainless steel bars (tensile test, Rockwell hardness)

GB/T 12771: Stainless steel pipes (tensile test, Rockwell hardness)

Welding Consumables

GB/T 5117, GB/T 5118: Electrodes (tensile test of deposited metal, impact test of weld metal, chemical composition analysis)

GB/T 8110, GB/T 10045, GB/T 5293, GB/T 12470: Wires (tensile test of deposited metal, impact test of deposited metal, chemical composition analysis)

Other Materials

YB/T 151, JG/T 472: Steel fibers (surface quality, length, diameter, aspect ratio, shape acceptance rate, tensile strength, bending performance, etc.)

GB/T 2118, GB/T 8358: Steel wire ropes (breaking force)

JG/T 351: Fiber-reinforced polymer (FRP) rebar (tensile strength)

Materials for Railway Applications

Springs (appearance, hardness, spring test force)

Tie plates (appearance, yield strength, tensile strength, percentage elongation after fracture)

Rail fastening bolts (appearance, tensile test, bend test, impact test, hardness, proof load, etc.)